For a truss with more than one redundant bar, more than one release will be required to obtain the primary frame .

对于有一个以上多余杆的桁架要得到基本体系，就要放松一个以上的约束。

youdao

Under the premise of the weight of the entire truss structure satisfying certain constraints, it achieved the minimum flexibility by optimizing the cross-sectional area of the bar.

采用的力学准则为满应变设计准则； 在整个桁架结构重量满足一定约束的前提下，通过优化各杆件截面积，达到整体柔度最小。

youdao

Finally, the efficiency of proposed approach is demonstrated in solving two-bar truss optimization problem.

最后以两杆桁架多目标优化问题为例，说明了该方法的应用。

youdao